Automobile lifting and power jack



c. JONES. AUTOMOBILE LIFTING AND POWER JACK.

APPLICATION FILED NOV. 1S, 1918.

'Patented Nov. 4, 1919.v

.CHARLES JONES, 0F WEBSTER CITY, IOWA.

AUTOMOBILE LIFTING- AND POWER JACK.

To all whom t may concern.' Y n Be it known that I, CHARLES JONES, a citizen of the United States of America, and resident of Vebster City, Hamilton county, Iowa, have invented a new and useful Automobile Lifting and Power Jack, of which the following is a specification. t i

The object of. this invention is to provide an improved power attachment adapted to be `actuated by the rear drive wheels of a motor vehicle to supply power to a transmission member suchfas a belt pulley. The further object of this invention is to provide improved means for elevating the rear drive wheels of an automobile and transmitting power from such wheels.

A further object of this invention is to provide an improved construction for a mechanism for engaging, lifting and supporting the rear -axis of a motor vehicle to permit the drive wheels to be employed m driving a power shaft.

A further'object of this invention ris to provide improved means for operating the jack standards. I

A further object ofthis invention is to provide yan improvedV construction whereby the jack standards may yield slightly vto compensate' for inequalities of the tread surfaces 4of the drive wheels in their contact with the power pulleys.

My invention consists in the construction, arrangement and combination of elements hereinafter set forth, pointed out in my claims and `illustrated by the accompanying drawing, in which- Figure 1 is a plan of my improved device and Fig. 2 is a side elevation of the same. Fig. 3 is a side elevation, partly in section, on an enlarged scale, illustrating one o'fthe jack: standards andthe shaftland pinion coperating therewith', Fig. 4 is an elevation at right angles to Fig. 3, a portion being broken away to reveal internal construction. Fig. 5 is a cross-section on the line 5 5 of Fig. 4.

In the construction of the device as shown 4a frame is provided including spaced par- Specification of Letters Patent.

Patented Nov. 4, 1919.

Application filed november is, 191s. serial No. 263,079.

Vertical mortises 16, 17 are formed in the sills 10, 11 in front of the bearings 12, 13 and a shaft 18 is mounted transversely between said sills and has ,its end portions journaled in said sills adjacent said mor'- tises. A pinion 19 is mounted on the shaft i 18 in each of the mortises 16, 17, and each of said pinions is formed with an integral collar 20 o-n its outer side through which a set screw 21 is mounted to lengage said shaft; and each collar is also formed with a peripheral groove 22 adjacent the pinion. Jack standards 23, V24 are provided, and each is formed at its upper end with a seat 25 adapted to engage the fixed tubular rear axle of a motor vehicle. Each jack standard 23, 24 is formed with a longitudinal slot 26 embracing the shaft 18 and on one side rof said slot is formed with ka. longitudinally extenc'ling rack 27 in mesh with the adjacent pinion 19. On each side each jack standard 23, 24 is formed with a pair of Hanges, designated by the numerals 28, extending toward the shaft 18, and outlining the side nrargins lof the notch 26 and also forming a housing snugly containing a pinion 19.- The jack standards 23, 24 are odset laterally near pinions 19 within the housings of the Yjack u standards before setting them on the shaft 18; it being desirable to form each of said jack standards in one piece by casting.

A toothed wheel 29 is formed with an integral set coll'ar 30 by means of which it is secured to the shaft 18 and a hand lever 31 is pivoted on said `shaft adjacent to and formed with common spring pressed detent devices 32 adapted to engage said toot-hed wheel. By this means the shaft 18 may be rotated manually Vby successive factuationsof the lever 31 to engage and turn the toothed wheel 29. A pawl 33 on the frame 10-1'1, engaging a ratchet wheel 34 on the shaft 18, serve to prevent reverse rotation ofthe shaft 18 between successive manual operations through the lever 31.

In practical operation a motor vehicle to be employed in connection with the device is moved reversely-or otherwise suitably positioned with its rear axle extending transversely above the sills 10, 11 adjacent the shaft 18. lThe jack standards 23, 24 are Vmanually positioned with their seats 25 in engagement with the rear axle of the vehicle and then the shaft 18 is rotated by means of the hand .leverj3l, deten-t devices 32 and toothed Vwheel 29. rlhis causes a ro tation of the pinions 19 and an'upward movement of the racks 27 andr with them v of the jack standards, lifting the vehicle laxle and raising the rear driving wheels of the v vehicle clear of the supporting surface. The

vehicle wheels are then brought into frictional engagement with'grooved wheels 35, 36 fixed to end portions of the shaft 1a and when the engine of the vehicle is operated its driving wheels turn said grooved wheels, the shaft 14 and belt pulley 15 and power is vtransmitted therefrom to loperate a follower device. Coil springs y37, 38 are provided and are secured at one end to the sills 10, 11 respectively and are adapted'to have Y vtheir opposite ends detaehably secured to ards the racks 27 oscillate on and at'the points of engagement with the pinions 19, and such yieldinoof either jack standard is independent of the other and of the shaft 18.

l claim as my inventionl l. A device of the class described, coinprising a frame, a shaftv journaled therein, a transmission pulleycon said shaft, spaced drive pulleys on said shaft andada'pted for Vfrictional `Contact withV the drive 'wheels of a vehicle, a second shaft journaled inV said frame, pinions fixed toV said second shaft,

jack standards mounted for oscillation and.

for vertical movement in said frame and formed with longitudinal racks iii mesh wi-th said pinions, said standards alsoV be` ing provided withineans for engaging the rear axle of a vehicle, and means for operating said second shaft.

2. A2, device of the vclass described, com-v Copes of this' patent maybe obtained for prising a frame, a shaft journaled therein, a transmission pulley on said shaft, spaced drive pulleys on saidshaft adapted for frictional contact with the drive wheels of a vehicle, a second shaft journaled in said frame, pinions fixed to said second shaft,

VYjack standards mounted for oscillation and forivertical movement in said frame and formed with longitudinal racks in mesh with said pinions, said standards also being provided with means for engaging the axlejof a vehicle, means ,forv manually operating said second shaft, and yielding ineansadapted to connect the upper portions of said standards to the frame.v Y

3. A device of the class described, comprising a frame, a shaft journaled therein,

a transmission pulley on said shaft, spaced drive pulleys on said shaft adapted for frictional contact with t-he drive wheels of a vehicle, a second shaft j ournaled in said frame, pinions fixed tothe second shaft, jack standards mounted'for oscillation andffor vertical movement V'in said frame and formed with longitudinal racks in mesh with said pinions, said standards also being provided with means for engagingthe axleY of a vehicle, a toothed wheel fixed to the second shaft, a handlever pivoted on said shaft andy pro-V vided with'detent devices. for engaging said toothed wheel, and interengaging'pawland l ratchet devices on said frame and second shaft to prevent reverse rotation of the latter.

4. A device of the classdescribed, comprising a frame, a shaft journale'dA therein, a transmission pulley on said shaft, spaced drive pulleys on said shaft adapted for frictional contact with the drive wheels of a vehicle, a second shaft journaled in said frame, a pair of' pinions fixed to the second shaft, jack' standards@ formed with longitudinal'slo'ts embracing the second shaftk and Y with racks in said slots meshingV with said pinions,said standards also being provided with means for engaging the axle of a vehicle, and means for manually rotating the second shaft. v Y t Y f VSigned at Webster City, inthe county of Hamilton and State of Iowa, this'28tli day of October, 1918.V n f CHARLES ,.ioivns'.-V

five cents each, by addressn'g'the Gommissionerfof Patents, Washington, D. C. Y' i 

